The Bose QuietComfort 20 portable noise canceling earphones have an isolating earbud design. These mobile device-centric earphones can be used with the noise canceling feature turned on or off, and have a 50-inch audio cord with a modified stereo 4-contact mini-plug that works with smartphones and tablets but may not be compatible with other audio devices. The earphones have an inline remote with a built-in microphone and integrated volume, music player function, and call connect/disconnect controls. It is available in an iOS version for best compatibility with Apple mobile devices and a Samsung version for best compatibility with Samsung Galaxy and some other Android mobile devices. The QuietComfort 20 comes with three pairs of ear bowl support earpieces of various sizes, a USB charging cable, and a carrying case. It is covered by a 12-month warranty.
Plug typeThe type of connection at the end of the audio cord, which will be plugged into the source component. Most have 1/8-inch standard (3-contact) "mini" jacks that fit portable devices. Models intended for use with newer iPod, iPhone, and some Blackberry smartphones, that have integrated microphones, audio player controls, and call connect/disconnect controls use a 1/8-inch 4-conductor mini jack. The audio function of models with 4-conductor mini jacks may not work properly or consistently with non-iPod/iPhone devices.
4 contact Mini (1/8")
Works with noise reduction off
Works with noise reduction offWill operate without the noise-canceling circuitry activated; allows the model to be used as standard headphones if the batteries die.
Integrated microphoneHas an integrated microphone for use with some cell phones or audio players with a recorder function.
Call connect/disconnect control
Call connect/disconnect controlThis allows you to answer or disconnect from a phone call with some cell phones.
Integrated volume control
Integrated volume controlThis allows you to adjust the volume without having to dig into your pocket or purse for a player.
Integrated player control
Integrated player controlThis allows you to control some player functions (for example: play, pause, track skip) via a control without having to dig into a pocket or purse for a player.
Detachable cableA detachable cable allows the headphones to be used for noise canceling without the cord being connected to a music or video player, or dangling from the headset.
Monitor functionHas a control that turns off the audio, and in the case of noise canceling models turns off the noise canceling function, so that ambient sounds can be heard. Useful for hearing ambience like travel announcements without turning off the audio player or removing the headphones.
Noise canceling unit in earpiece
Noise canceling unit in earpieceThe electronic circuitry for the noise cancelation function is integrated into headphones earpiece rather than incorporated as a separate module that is integrated into the audio cord.
Battery lifeAs claimed by the manufacturer.
Battery recharge time
Battery recharge timeAs claimed by the manufacturer.
Low battery indicator
Low battery indicatorAn indicator to show that the headphone battery power is low and will need to be replaced or recharged.
Warranty (mos.): parts/labor
Warranty (mos.): parts/laborWarranty is for parts and labor, in months.
Additional featuresAdditional features for this model.
Supports voice control when used with devices that have that feature. Available in iOS version for best in-line remote control compatibility with Apple mobile devices and Samsung version for best in-line remote control compatibility with Samsung Galaxy and some other Android mobile devices.
Included accessoriesIndicates what accessories are included.
Three pairs of ear bowl support earpieces of various sizes, USB charging cable, shirt clip, carrying case.
WeightReflects the weight, in ounces, of the headphones including the audio cable and batteries, if any.
Cable lengthCable length indicates the approximate length of the cable from the headset or earpiece to the plug, measured in inches.
Battery typeThe number and type of batteries used.